Electrical wiring and molding system



Oct. 3, 1939. R. L. nAvis'ou I ELECTRICAL IIRING AND IOLDING SYSTHI Filed Jui 29, 2 Sheets-Sheet 1 Ill-7.1.1 CI

Oct. 3, 1939.

R. 1.. DAVISON ELECTRICAL WIRING ANDJIOLDING SYSTEi Filed Ju1y'29, 1933 2 Sheets-Sheet 2 INVENTQR 0 87+ OV n a f K10 ORNEY mm s'rA-ras PATENT OFF- 5 I Application in, :9, 1m, semi No. tug-gs? '4 Claims.

' This invention relates to -a system of combined electrical wiring and molding, serving the dual purposes oia finish for the structure of a room, enclosure and the like, "as, for example, for the ;5 base board of a floor, the top of a floor base board, the picture molding, side wall and ceiling molding, etc., and also to house, insulate and protect electrical wiring. This-application is a continuation in part of ,10 my copending application Serial No. 643,325, flied November 19, 1932, entitled Combined molding and electric conductor. A feature of my invention is the provision of relatively long units of combined electrical wirl ing and molding, the terminals of the conductors oi which long units do not project at each end, and advantageously substantially flush at both ends of each such unit, such terminals being of a suitable socketed type, in association with units oi relatively short length, the terminals of the conductors of which project at both ends, the units of short length serving to interconnect, that is, to couple, the units of long length, the conductors of the respective unitsbeing spaced and dimensioned relative to one another when thus coupled end to end, in carrying out the above stated purposes. I

The exposed faces of the material serving as molding and trim are employed in the construc- 440 tion oi rooms and other enclosures, as well as for exterior use of houses and other buildings, structures in general, etc.

By the utilization of my invention, such molding or trim embodies electrical conductors, and .45 provision is made for locating as desired or required outlets for the supply of electrical current for general uses of the same, such as the usual consumption devices, i.e., electric lamps, electric clocks, electric irons, radios, electric refrigerators,

v50 electrical dish washers, electrical washers and other laundering machines, and the like, the general desideratum being to avoid lengths of cable or, other wiring for such consumption devices. most usually lying on floors, extending over or 66 about furniture and the like, and otherwise obunits about corners.

the body of the molding is preferably imperforate,

structing free passage, collecting dirt, and intro- I ducing iire and other hazards, and to avoid BX and other conduit connections, etc.

, The relatively long units may be standardized, say itor three, four, ilve, etc. feet. The short 6 units may advantageously be of uniiormlength. The short units may, or may not, have'an outlet as for example serving to connect with a plug leading to any desired electrical consumption device. 1o

Pursuant to my system the outlet-provided unit or units are located closely adjacent the respective locations of the consumption devices, to afford electrical connection by short cable or wires.

In the circumstance of a change of location oi the-consumption device,,the molding or trim is mechanically disconnected. observing the precaution oi de-energizing the conductors, and the outlet-provided unitinstalled at the desired new 20 location, the principle of my system being carried out in the installation of the same.

Certain types of the short units of like general nature are employed for interconnecting long present invention resides in the use of hollow conductors for the long units, primarily for affording a socket connection ateach end of such long units, the termini of both conductors at both ends of each long unit being substantially flush, that is to say, notprojecting, relative to the face of each unit end. Advantageously, the conductors of the long units may he tubes 01' copper or other good electrically conducting material oi proper bore.

The commercialization of my invention con- 40 templates the manufacture of the short units of suitable moldable material, the relatively small dimensions oi such short units enabling such manufacture to be carried out at low material and labor costs. 7 v

Coordinated with such long units, the short units, inclusive. of rectilinear units, corner units,

etc. embody c'onductorawhich advantageously may be rods oi copper or other good electrical conducting material of proper outside diameter ordiameters. Preferably, the terminal portions of each end of the conductors of the-short units are bifurcated or otherwise slotted, to provide laterally eilective resiliency in insuring good electrical connection by mere frictional engagement 86 Suchcorner units may be 25' units and a supply of the various required typesrectilinear interconnecting unit, illustrating pa'rticularly, one manner of electrically connectingwith the hollow termini of the conductors of the long units.

Idrealizationof the advantages of low cost of production and installation, commercial embodiments of my invention are had by forming substantially the entirety of the body of the long and short units-excepting of course the enclosed conductors-of insulating material.

By properly assembling such coordinated long and short units of my system in the specific installations, any desired combined molding and wiring is most readily had by ordering or having in stock standard or other lengths of the long of short units. In any given installation, the molding is built up by the stated principle of assembly of such standard long units as may be available, any length less than a standard length being had by the use of a saw or other suitable severing tool, since a mere sawing operation attains the desideratum of having the termini of the hollow conductors substantially flush with the sawed face of the unit.

Therefore:

An object of the invention is to provide a construction of molding which carries and suitably insulates the conductors serving as the electrical 8'- An object of the invention is to provide a combined molding and electrical wiring system of units, the exposed faces of such units being imperforate, the configuration of the exposed faces of the component units being preferably unbroken and substantially identical, the units being assembled relative to one another to attain the eflect of substantial integrality.

An object of the invention is the provision of a combined molding and electric wiring system, the electrical conductors, notably the hot conductor, being disposed inaccessible to unauthorized persons.

Further features and objects of the invention will be more fully understood from the following detail description and the accompanying drawings, in which Fig. 1 is a perspective view of a portion of a room or other enclosure, illustrating a commercial application of a preferred form of my invention;-

Fig. 2 is a perspective exploded view of an assembly of component units, namely, a rectilinear interconnecting unit, a longitudinal unit and a corner interconnecting unit, corresponding generally to Fig.1;

Fig. 3 is a perspective view of one type of the conductors to a house supply or other power circuit;

Fig. 8 is a perspective view on an enlarged scale of a short unit, the projecting termini of its conductors being slitted for resiliency eflect;

Figs. 9 and 10 are respectively a vertical secprovided short unit;

Fig. 11 is a perspective viewof a type of short unit provided with an outlet having a countersunk face and one form of closure cap, for concealing and protecting the outlet parts;

unit.

The installation-illustrated inFig. 1 indicates one manner of component assembly of my combined molding and wiring system at one side of a room shown as having two right-angled'corners. 10

.It will be understood that my system is flexible in application of selection of standard or other lengths of the long units.

As illustrated in Fig. 1, the long units are indicated at Ilia, llib, iilc, ltd, lie, it). tc. A short unit is indicated at iia; the short unit in this instance is not provided with an outlet. Another short unit is indicated at lib, which, in this instance, is provided with an outlet indicated at i2.

A converging corner short unit shown in Fig. 1, go

short of component parts and utilized in a similar manner, and correspondingly molding applied at the intersecting faces of walls and ceiling, between mantle and wall, etc., are built up and applied in a corresponding manner.

As appears, the exposed faces of the molding are imperforate excepting for the desired outlet or outlets, such 'imperforate feature serving to protect the conductors from exposure to and accumulation of soap-containing and other cleaning fluids, dirt and other foreign matter, protection from children and other unauthorized persons, etc. Desirably from the view point of artisticness, the exposed faces of the component units may be of the same configuration, color, etc. as desired.

As illustratedin Fig. 2, the material of the body I of the indicated long unit it is homogeneous, in which instance any suitable electrically insulating material may be employed. The process of forming such body M by molding, extruding, etc. may be carried out as preferred.

The unit il illustrated in Fig. 2 corresponds to the units iila, iilb, iflc, etc. indicated in Fig. 1. so

The conductors ii, I! of the long unit II are preferably hollow tubing; their respectiw: ends iIa, lie and its, a, that is to say, at both ends of each long unit II are substantially flush with the faces'of the material 14. In such illustrated embodiment of my invention, submmtially the entirety of the body of each long unit is formed of-the electrically insulating material I, which encloses and retains in proper relative position the conductors II, II. I a

For the purpose of identifying the respective conductors II, II, the internal, 1. e.,ei'feetive dimeters, of the same may he of different bore:

as, for example, the "hot wire", say i6, may be 70 of larger bore. than the grounded "wire" ii. For systems requiringthree "wires, provision is had in like manner, and similarly for any larger plurality of wires", in the respective embodiments of my invention, and the units thereof.

Fig. 12 is'a frontelevational view of an end 5 I If desired, the bores may be uniform or of different diameters.

The short unit ll illustrated in Fig. 2 corresponds to the short unit ;I la indicated in Fig. 1.

An essential of a short unit ll, see'Flg. 2, as distinguished from a long unit [0, is that its conductors l1, it, have their respective ends Ila, Ha, and Illa, l8a, projecting at both ends of the unit H, the termini Ha, Ha and i841, Ila being of appropriate diameter or diameters for register with and to effect good electrical contact with a set of correspondingly located termini .la and lfia of the said hollow tube conductors As indicated in Fig. 2, the material of the body 14 of the short unit ii is homogeneous, and may be the same as the material ll of the long unit I.

Power is applied to the resulting electrical wiring component units as preferred. Advantageously, as is indicated in Fig. 7, electrical connection may be 'had with the house wiring system or other power line wires, through the instrumentality of a short unit- II, which type of short unit is provided with a recess l9, desirably at its rear, in which recess the conductors l1, it are wholly or partially exposed, affording mechanical and electrical connection, preferably including soldering, of the bared ends of the indicated conductors 20, 2| of a cable 22 leading from or connected to the electricalsource. The securement and protection of such electrical connection is enhanced by the useof any suitable plastic electrically insulating material, indicated at 23. If desired, the short units of all types may be provided with such rearwardly disposed recess l9, or if preferred such connection affording recess may be provided by a selected or definite type of short and/or long unit.

Preferably, the termini of the conductors l'la,

Fla and We and 3a are of resilient formation, had, for example, b longitudinal slitting of the same, as is indicated in Fig. 8. Under certain circumstances, it is preferred to arrange the slitting, see I'lb, Nb and lib, llb, Fig. 8, to lie in planes .substantially parallel to a mean plane of the main exposed face of the unit; in the instance of the illustrated unit, see Fig. 8, such main ex-- posed face is slightly arcuate, its mean plane extending approximately at -a 45 angle to the vertical.

As above indicated. the short unit is furnished I l of the type embodying an outlet, to afford connection with a plug, or equivalent, of a cable or other electrical wiring leading to the lamp, clock, iron, radio, refrigerator, or other electrical device, the cable or other electrical connection advantageously being of reduced length. Any suitable form of outlet maybe employed.

A suitable form of outlet'is indicated in Figs. 9 and 10, which in essence comprises the spring or other suitable terminal or contact members I10, I80, being suitably secured to the respective conductors IT, IS and extending upwardly in the recesses 25, 26. The exposed face 21 of the outlet is substantially flat, for engagement thereat of the usual flat face of a plug or equivalent.

As illustrated in Figs. 9 and 10, the face?! may be located beyond the outline of the arcuate or. other exposed face of the short unit I I.

Such outlet-provided short unit may be constructed to effect concealment of its terminal openings, to thereby present a substantially im-' perforate face coincident with the exposed face dirt and the like, and to shed cleansing fluid as when washing the molding with soap-containing or other cleansing fluid; such construction also obviates tampering with the electrical conductors.

As one form of such arrangement, I have illustrated in Fig. 11, an outlet, the face 28 of which is countersunk relative to the exposed face of the unit II, and a cap 29 for closing the resulting countersunk recess 28a when the outlet is notin use. Such closure cap may be removably locked in position. As one form of locking, I may provide the lugs 30, projecting from the cylindrical face of the cap 29. the respective lugs, upon application and partial turning of the cap 29 within the recess-28a, being received in the partial screw-threaded locking ridges 28b. The

exposed face of the cap 29 is desirably contoured to conform to the exposed face of the unit II.

The convergent type of short unit indicated in Fig. 3 and the divergent type of short unit indicated in Fig. 4 correspond to the constructions of the general type of short unit H, illustrated in Fig. 2, and likeparts are designated by like reference characters. In the illustrated two types of short units, shown in Figs. 3 and 4, the conductors l1, it are bent, preferably curved as. indicated at 11b, lab, respectively, to conform to the angle of the unit, in these two instances, at substantially a right angle; it is to be understood that in angular units embodying angles other than a right angle, the conductors l1, l8 are bent or curved correspondingly.

Fig. 6 illustrates, on an enlarged scale, th component assembly of a long unit, say-l0e, see also Fig. 1, interconnected to the long unit if by a converging short unit I lc, the closure of the connection of the projecting terminals I'Ia, Illa with the hollow terminals of the conductors G5, I

I6 respectively, of the long unit We is illustrated as in course of assembly.

Supplemental units embodying my invention, for carrying out detail wiring requirements will be apparent, from the herein disclosure. Thus for extending the wiring system vertically, as for example in a corner between two Walls, a unit such as the unit He is provided. The unit He corresponds in major construction to the unit llc, see Fig. 2, and also Fig. l, and likeparts are designated by like reference characters. In addition, the unit He comprises the vertically extending conductors l'ld, ltd respectively suitably connected to the horizontally extending conduc tors l1, l8. In corresponding manner, other forms of short and/or long units are arranged to provide for additional molding and/or wiring requirements.

Preferably, the blind end of a run of comceal and protect the terminals of the adjoining unit. One form of such end unit 3| is illustrated in Fig. 12, the body and facial configuration conforming to that of the remaining units of the system, excepting in the preferable form the provision of a suitably contoured face 32, serving as an appropriate finish face. The unit 3| is shown provided with terminals 33, 34, which advantageously but not necessarily may be of metal.

The respective units of my combined molding I5 hollow at its ends, preferably tubular throughout its length, to afford severing of the unit for any' desired length inclusive of severing each conductor to locate its terminus substantially flush-essentially not projectingrelative to each end of the long unit.

From the above, it appears that preferred embodiments of the long units and the two types of short units, that is, one type provided with outlet means and the other type not provided with outlet means, comprise insulation within the body of each such unit wholly embracing therespective conductors of such unit, and that such insulation extends integrally from conductor to conductor of each unit. Further, the exposed faces of preferred embodiments of each long unit and of each of the two types of short, units are substantially identical in facial contour to effect, when coupled end to end as above pointed out, visual continuity from end to end of the resulting molding and wiring system.

My invention in its respective embodiments is also applicable to combined trim and wiring systerns for factories, and also for automobiles, aeroplanes, etc., for lighting, power, etc., as well as general transmission of electrical energy to the desired locations of use.

I claim:

1. A combined molding and electrical wiring system comprising alternately assembled long and short conductor carrying units composed entirely of insulating material, and adapted to serve as a building molding, hollow electrical conductors insulatedly embodied in each long unit having termini respectively substantially flush at each end of each long unit, said short units serving as couplings for the long units and having electrical conductors insulatedly embodied therein-having termini respectively projecting at each end of each short unit and arranged to respectively enage the hollow termini of the conductors of adjacent long units, certain of said short units being provided with outlet means, the exposed faces of said long units and said short units being substantially identical in facial contour to efl'ect visual continuity when assembled.

2. A combined molding and electrical wiring of insulating material, and adapted to serve as a building molding, said short units serving as couplings for the long units, the conductors of said long units and said short units being in continuous conductive relationship when the units are assembled end to end, the insulation within the body of each long unit and each short unit wholly embracing the respective conductors of such unit and integrally extending from conductor to conductor of such unit, ,the exposed faces of said long units and said short units having their lateral edges in rectilinear alignment to eif ect visual continuity when assembled 3. A combined molding and electrical wiring system comprising alternately assembled long and short conductor carrying units composed entirely of insulating material, and adapted to serve as a building molding, hollow electrical conductors insulatedly embodied in each long unit having termini respectively substantially flush at each end ofeach long unit, said short units serving as couplings for the long units and having electrical conductors insulatedly embodied therein having termini respectively projecting at each end of each short unit and arranged to respectively engage the hollow termini of the conductors of adjacent long units, certain of said short units being provided with outlet means, the exposed faces of said long units and said short units having their lateral edges in rectilinear alignment to effect visual continuity when assembled.

4. A combined molding and electrical wiring system comprising alternately assembled long and short conductor carrying units composed entirely of insulating material, and adapted to serve as a building molding, said short units serving as couplings for the long units, the conductors of said long units and said short units being in continuous conductive relationship when the units are assembled end to end, the insulation within-the body of each long unit and each short unit wholly embracing the respective conductors of such unit and integrally extending from conductor to conductor of such unit, the exposed faces of said long units and said short units having their lateral edges in rectilinear alignment ROBERT Linavrson. 

